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Environmental Flow Requirements (Efrs) Related To Preference Of Phytoplankton In The Yellow River Estuary (Yre) Based On An Ecohydrodynamic Model, R. Zhao, Z. F. Yang, T. Sun
Environmental Flow Requirements (Efrs) Related To Preference Of Phytoplankton In The Yellow River Estuary (Yre) Based On An Ecohydrodynamic Model, R. Zhao, Z. F. Yang, T. Sun
International Congress on Environmental Modelling and Software
The response of ecological processes to hydrological processes is a critical issue in the assessment of environmental flow requirements in estuaries. Considering its representative function of the primary productivity in estuaries, the phytoplankton community was selected as the bioindicator to indicate the variation of ecosystems influenced by hydrological processes in estuaries. Based on the regression analysis, a response relation model was established for describing the relationship between characteristics of phytoplankton communities (chlorophyll a, Fucoxanthin, chlorophyll b, and pyridinin) and indicating factors including salinity, COD, ammonia nitrogen, and dissolved oxygen. The biomass objective of high nutritional level organisms, the biomass of …
Environmental Flow Requirements (Efrs) Related To Preference Of Phytoplankton In The Yellow River Estuary (Yre) Based On An Ecohydrodynamic Model, R. Zhao, Z. F. Yang, T. Sun
Environmental Flow Requirements (Efrs) Related To Preference Of Phytoplankton In The Yellow River Estuary (Yre) Based On An Ecohydrodynamic Model, R. Zhao, Z. F. Yang, T. Sun
International Congress on Environmental Modelling and Software
The response of ecological processes to hydrological processes is a critical issue in the assessment of environmental flow requirements in estuaries. Considering its representative function of the primary productivity in estuaries, the phytoplankton community was selected as the bioindicator to indicate the variation of ecosystems influenced by hydrological processes in estuaries. Based on the regression analysis, a response relation model was established for describing the relationship between characteristics of phytoplankton communities (chlorophyll a, Fucoxanthin, chlorophyll b, and pyridinin) and indicating factors including salinity, COD, ammonia nitrogen, and dissolved oxygen. The biomass objective of high nutritional level organisms, the biomass of …
Numerical Modeling Of The Salinity Distribution And Environmental Flows Assessment In The Yellow River Estuary, China, T. Sun, Z. F. Yang
Numerical Modeling Of The Salinity Distribution And Environmental Flows Assessment In The Yellow River Estuary, China, T. Sun, Z. F. Yang
International Congress on Environmental Modelling and Software
Predication of environmental flows is a critical issue in water resourcesmanagement integrated with ecological considerations. It is also a complex issue due to therelationship between ecological and hydrological processes with different temporal andspatial scales in estuarine ecosystems. The salinity gradient is a basic characteristic for anestuary ecosystem, which is largely affected by the alteration of freshwater inflows becauseof human activities. In this paper, a numerical model was developed for simulating thesalinity distribution under the action of river discharge and tide current in the Yellow RiverEstuary. Environmental flow requirements were determined for critical periods in theYellow River Estuary after identifying the …
Using Satellite-Derived Optical Data To Improve Simulation Of The 3d Light Field In A Biogeochemical Model, Barbara J. Robson, Nagur Cherukuru, Vittorio Brando
Using Satellite-Derived Optical Data To Improve Simulation Of The 3d Light Field In A Biogeochemical Model, Barbara J. Robson, Nagur Cherukuru, Vittorio Brando
International Congress on Environmental Modelling and Software
Satellite images provide a rich data source for environmental modelling. Use ofsatellite data for calibration or validation of ocean models is now common-place. Satelliteobservations can also be used more directly to improve model performance - usuallythrough "nudging" of model results towards observed values. We describe a novel approachto satellite data assimilation, applying empirically derived "correction factors" to simulatedoptical conditions in a process-based, three-dimensional biogeochemical model of a coastalsystem. The correction factors (which are functions of simulated salinity and suspendedsolids concentrations) are applied to simulated attenuation and backscattering. The result isimproved simulation of optical conditions and a consequent improvement in simulatedchlorophyll …
Numerical Modeling Of The Salinity Distribution And Environmental Flows Assessment In The Yellow River Estuary, China, T. Sun, Z. F. Yang
Numerical Modeling Of The Salinity Distribution And Environmental Flows Assessment In The Yellow River Estuary, China, T. Sun, Z. F. Yang
International Congress on Environmental Modelling and Software
Predication of environmental flows is a critical issue in water resourcesmanagement integrated with ecological considerations. It is also a complex issue due to therelationship between ecological and hydrological processes with different temporal andspatial scales in estuarine ecosystems. The salinity gradient is a basic characteristic for anestuary ecosystem, which is largely affected by the alteration of freshwater inflows becauseof human activities. In this paper, a numerical model was developed for simulating thesalinity distribution under the action of river discharge and tide current in the Yellow RiverEstuary. Environmental flow requirements were determined for critical periods in theYellow River Estuary after identifying the …
Using Satellite-Derived Optical Data To Improve Simulation Of The 3d Light Field In A Biogeochemical Model, Barbara J. Robson, Nagur Cherukuru, Vittorio Brando
Using Satellite-Derived Optical Data To Improve Simulation Of The 3d Light Field In A Biogeochemical Model, Barbara J. Robson, Nagur Cherukuru, Vittorio Brando
International Congress on Environmental Modelling and Software
Satellite images provide a rich data source for environmental modelling. Use ofsatellite data for calibration or validation of ocean models is now common-place. Satelliteobservations can also be used more directly to improve model performance - usuallythrough "nudging" of model results towards observed values. We describe a novel approachto satellite data assimilation, applying empirically derived "correction factors" to simulatedoptical conditions in a process-based, three-dimensional biogeochemical model of a coastalsystem. The correction factors (which are functions of simulated salinity and suspendedsolids concentrations) are applied to simulated attenuation and backscattering. The result isimproved simulation of optical conditions and a consequent improvement in simulatedchlorophyll …
A Dynamic Model Of Primary Production And Plant Coverage In An Oligotrophic Tropical River, Barbara J. Robson
A Dynamic Model Of Primary Production And Plant Coverage In An Oligotrophic Tropical River, Barbara J. Robson
International Congress on Environmental Modelling and Software
Many of Australia's tropical rivers are amongst the most ecologically intact inthe world, but have been relatively little studied. Now, however, there is pressure forfurther development of these tropical land and water resources. To avoid repeatingmanagement mistakes that have been made elsewhere, it is essential to improve ourunderstanding of how these rivers function. As part of the Tropical Rivers and CoastalKnowledge Research hub, we studied flow, nutrients, and primary production in the DalyRiver (N.T.), a perennial tropical river maintained in the dry season by ground-water anddeveloped a dynamic simulation model to predict the coverage and biomass of each of fivekey …
Integrated Modelling For The Conservation Of River Ecosystems: Progress In The South Australian River Murray, Brett A. Bryan, I. Overton, A. Higgins, K. Holland, R. E. Lester, D. King
Integrated Modelling For The Conservation Of River Ecosystems: Progress In The South Australian River Murray, Brett A. Bryan, I. Overton, A. Higgins, K. Holland, R. E. Lester, D. King
International Congress on Environmental Modelling and Software
Investment in water infrastructure and management can enhance the ecological health of water-dependent ecosystems along highly regulated rivers. Investment in new flow-control infrastructure and management of both existing and new infrastructure can help return natural environmental flows to achieve healthy and representative areas of river ecosystems. In this paper, we developed an integrated model to cost-effectively restore environmental flows and ecosystem health in the River Murray in South Australia. The model integrates a range of hydrological, ecological, economic, and social components. A hydrological model is used to identify spatial and temporal inundation dynamics given flow rates and weir operation. Ecological …
A Dynamic Model Of Primary Production And Plant Coverage In An Oligotrophic Tropical River, Barbara J. Robson
A Dynamic Model Of Primary Production And Plant Coverage In An Oligotrophic Tropical River, Barbara J. Robson
International Congress on Environmental Modelling and Software
Many of Australia's tropical rivers are amongst the most ecologically intact inthe world, but have been relatively little studied. Now, however, there is pressure forfurther development of these tropical land and water resources. To avoid repeatingmanagement mistakes that have been made elsewhere, it is essential to improve ourunderstanding of how these rivers function. As part of the Tropical Rivers and CoastalKnowledge Research hub, we studied flow, nutrients, and primary production in the DalyRiver (N.T.), a perennial tropical river maintained in the dry season by ground-water anddeveloped a dynamic simulation model to predict the coverage and biomass of each of fivekey …
Integrated Modelling For The Conservation Of River Ecosystems: Progress In The South Australian River Murray, Brett A. Bryan, I. Overton, A. Higgins, K. Holland, R. E. Lester, D. King
Integrated Modelling For The Conservation Of River Ecosystems: Progress In The South Australian River Murray, Brett A. Bryan, I. Overton, A. Higgins, K. Holland, R. E. Lester, D. King
International Congress on Environmental Modelling and Software
Investment in water infrastructure and management can enhance the ecological health of water-dependent ecosystems along highly regulated rivers. Investment in new flow-control infrastructure and management of both existing and new infrastructure can help return natural environmental flows to achieve healthy and representative areas of river ecosystems. In this paper, we developed an integrated model to cost-effectively restore environmental flows and ecosystem health in the River Murray in South Australia. The model integrates a range of hydrological, ecological, economic, and social components. A hydrological model is used to identify spatial and temporal inundation dynamics given flow rates and weir operation. Ecological …